Temat: Chemiczne Zapotrzebowanie Tlenu - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Susceptibility of conditioned excess sewage sludge to biodegradation and dewatering
Autorzy:: Wolski, P
Zawieja, I.
Powiązania:: https://bibliotekanauki.pl/articles/208170.pdf
Data publikacji:: 2015
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: volatile fatty acids
biodegradation
chemical compounds
chemical oxygen demand
fatty acids
microbiology
sewage sludge
activated sludge
lotne kwasy tłuszczowe
biodegradacja
związki chemiczne
chemiczne zapotrzebowanie tlenu
kwasy tłuszczowe
mikrobiologia
osady ściekowe
osad czynny
Opis:: A direct effect of chemical disintegration of excess sludge is an increase in concentration of organic compounds in the sludge liquor, expressed with the levels of soluble chemical oxygen demand (SCOD) and volatile fatty acids (VFAs). The substrate used in the study was activated sludge. The aim of the study was to determine susceptibility of disintegrated excess sludge to biodegradation and dewatering. A SONICS VCX-1500 ultrasonic disintegrator with automated tune-up was used. Thermal disintegration of excess sludge was carried out in water bath with a shaker. Disintegration of excess sludge by the hybrid method was carried out as a combination of the ultrasonic and thermal methods.
Źródło:: Environment Protection Engineering; 2015, 41, 3; 5-17
0324-8828
Pojawia się w:: Environment Protection Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Biological nutrient removal using a novel five-step continuous flow activated sludge process technology
Autorzy:: Abualhai, S.
Naseer, R.
Xiwu, L.
Powiązania:: https://bibliotekanauki.pl/articles/208183.pdf
Data publikacji:: 2013
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: nitrogen removal
activated sludge process
chemical oxygen demand
sewage
nutrient removal
biological processes
nutrient concentrations
usuwanie azotu
chemiczne zapotrzebowanie tlenu
ścieki
biologiczne usuwanie składników odżywczych
proces biologiczny
stężenie substancji odżywczych
metoda osadu czynnego
proces osadu czynnego
Opis:: An anaerobic-anoxic/oxic (AA/O) five-tank biological process called five-step continuous flow activated sludge process (FSCFASP) was developed to force the oscillation of organic matter and nutrient concentrations in process reactors. The run scheme and schematic diagram of FSCFASP was described. The run cycle was divided into two symmetrical half cycles with eight periods during each cycle. The duration of each period was established according to biological process requirements. The optimal running times of the periods were 90, 60, 60, 30, 90, 60,6 0 and 30 min at the HRT of 16 h, air/water ratio of 35% and SRT of 21 day at the temperature range of 19-23 °C. The optimized system achieved 88.09±1.43%, 90.33±2.9%, 68.83±5.34% and 87.67±2.9% of the chemical oxygen demand, NH4+-N, TN, and TP removal efficiencies, respectively, during a 11-month operation with the effluent meeting the Chinese sewage discharge standard GB18918-2002 (level A). Simultaneous nitrification and denitrification phenomena were observed in the tank one which is important to reduce the quantity of aeration and the duration of a next anoxic state. Compared with other existing technologies, this system achieved high nitrogen and phosphorus removal without equipment of sludge and mixed liquor return. Thus, it is effective for reducing energy consumption.
Źródło:: Environment Protection Engineering; 2013, 39, 3; 165-184
0324-8828
Pojawia się w:: Environment Protection Engineering
Dostawca treści:: Biblioteka Nauki

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